Bobbin



Jan. 7, 1969 c, c, BELL 3,420,467

BOBBIN Filed Aug. 28, 1967 l NTOR. I I4 CHARLES ELL ATTORN EYS United States Patent M 3,420,467 BOBBIN Charles C. Bell, Warwick, R.I., assignor to Leesona Corporation, Warwick, R.I., a corporation of Massachusetts Filed Aug. 28, 1967, Ser. No. 663,657 US. Cl. 242-1183 Claims Int. Cl. B6511 75/10 ABSTRACT OF THE DISCLOSURE A bobbin intended primarily for use with automatic textile machinery. Said bobbin having a compartment adjacent its tip adapted to receive and hold a length of the outermost end of the yarn wound thereon. One wall of said compartment is perforated so that the end of yarn can be deposited in said compartment, or removed therefrom by a stream of fluid, preferably air.

The present invention relates to a bobbin adapted to have a supply of yarn wound thereon and having means by which the free end of said yarn can be held for ready retrieval.

In the following specification, the term yarn is used in a general sense to mean all types of strand material, either textile or otherwise, and the term package means the product of a winding, twisting, or spinning machine whatever its form.

In the manufacture of textiles it is customary to wind yarn onto bobbins to form packages which can be conveniently employed in subsequent operations. One problem in this operation is securing the free end of yarn on the wound package, and a second problem is locating that end for use in a subsequent operation. These two problems are, of course extremely troublesome in automatic operations as where the package is wound automatically, or is made ready automatically for said subsequent operation, or is used as a supply for an automatic winding machine, or other machine to which such bobbins are fed automatically.

The present invention provides a bobbin having a longitudinally extending bore with a perforated or porous partition extending across the bore at a location near one end of the bobbin to form, with the bore, a yarn receiving compartment. The partition is fixed in said bobbin bore and when a stream of air is caused to flow through the bore from tip towards its base a free end of yarn from the bobbin is drawn into the compartment and against the partition to form a yarn bunch. When the air stream is stopped the yarn bunch is retained in the compartment thus securing the wound package against unwinding and positioning the yam end available for subsequent steps. When it is desired to retrieve the free end for use in a subsequent operation a stream of air is caused to pass through said bore in the opposite direction, i.e., from the base to tip, thus blowing or sucking it from said compartment 45.

An object of the invention is the provision of a new and improved bobbin adapted to readily receive and hold a free end of yarn for ready retrieval.

A further object of the invention is the provision of a new and improved bobbin having a longitudinally extending bore with a perforated or porous partition extending across the bore at a location adjacent one end of the bobbin to provide a compartment for retaining a bunched free end of the yarn wound on said bobbin.

In the drawings, FIG. 1 is an elevation view, certain portions being cut away and in section for clarity, illustrating a spindle and a bobbin embodying the invention mounted on the spindle;

FIG. 2 is a fragmentary perspective view partly cut away and in section illustrating certain parts in greater detail;

Refer now to the drawings and initially to FIG. 1 which illustrates a bobbin B mounted on a spindle S arranged to receive the bobbin. The spindle S is suitably mounted on a rail 10 and includes a whirl 12 frictionally engageable by a moving belt 14 to rotate the spindle for winding yarn on bobbin B. The spindle blade 16 may conveniently have an enlarged lower portion 18, and a plurality of spring pressed button elements 24 to engage the inner peripheral surface of the bore of bobbin B.

Bobbin B has an outer yarn receiving surface comprising a substantially cylindrical main section 25 and a frustoconical base 25a adapted to receive and support a yarn package P. It will be understood that the yarn receiving surface can be any other desired convenient shape as, for example cylindrical from end to end or conical fram end to end.

An axial bore 27 passes through bobbin B. Said bore comprises a first portion 28, which necessarily is longer than the blade 16 of the spindle on which the bobbin is to be used, and which terminate adjacent the upper or tip end of the bobbin B. Above said first portion or length 28 said bore is of smaller diameter to provide a second portion 30 and to define a shoulder 32 at the boundary between the portions 28 and 30. A perforated or porous partition 34, such as a perforated plate, meshed or netted wire, sintered metal or textile fabric, or the like, is received within and extends across the bore 27 and is seated against shoulder 32 to provide an air permeable partition. The perforated partition 34 preferably is fixedly secured to a rim 38 which is seated upon the shoulder 32. Although it is preferred that the partition 34 be held in place by means of a press fit, it may be adhesively secured to the bobbin B. It will also be understood that the diameter of compartment 45 can be the same diameter as portion 28 or of larger diameter. The uppermost end of said compartment 45 is rolled inwardly as at 40 to provide a yarn retaining wall.

It will be understood that if the free end of the yarn package P is held adjacent the opening of compartment and a vacuum applied to the base of the bobbin the end of yarn will be sucked into compartment 45 and against partition 34. Conversely, a stream of air could be blown downwardly into said compartment to blow said yarn end into the compartment.

When it is desired to use the yarn wound on the bobbin a vacuum applied to the tip of the bobbin will suck the end out of compartment 45. Alternatively a stream of air can be forced into the base of the bobbin to blow the bunch out of the compartment.

Although a preferred embodiment of the invention has been disclosed, it should be recognized that the invention is capable of other and further embodiments and that they may be modified in various ways, all without departing from the invention defined in the appended claims.

What is claimed is:

1. A bobbin having apassageway extending therethrough and having a permeable partition within said passageway extending across said passageway to provide a yarn receiving compartment in said passageway.

2. A bobbin'as set forth in claim 1 wherein said passageway is an axial bore.

3. A bobbin as set forth in claim 1 wherein said passageway is adapted to receive a spindle and said partition is so positioned in said passageway as not to interfere with the insertion of said spindle therein.

4. A bobbin as set forth in claim 2 wherein said partition is a perforated plate.

5. A bobbin as set forth in claim 2 wherein said partit-ion is a sintered plate.

6. A bobbin as set forth in claim 2 wherein said partition is a screen.

7. Apparatus as set forth in claim 6 wherein said screen is wire mesh fabric.

8. A bobbin as set forth in claim 2 wherein said bore includes an annular shoulder and against which said partition is seated.

9. A bobbin as set forth in claim 8 wherein said partition includes an annular rim seated adjacent said shoulder, and securing said partition in said bore.

10. A bobbin as set forth in claim 2 wherein an open end of said bobbin includes an inwardly extending annular flange, said flange providing an aperture having a diameter smaller than the diameter of said partition.

References Cited UNITED STATES PATENTS 10 STANLEY N. GILREATH, Primary Examiner.

US. Cl. X.R. 

